def test_brew_both_empty():
source = ""
target = ""
gold = 0
assert brew(source, target) == gold
def test_brew_empty_target():
source = "asdfb"
target = ""
# From brew delete cost
gold = len(source) * 15
assert brew(source, target) == gold
def test_brew_empty_source():
source = ""
target = "asdfb"
# From brew insert cost
gold = len(target) * 0.1
assert brew(source, target) == gold
def test_brew_different_when_swapped():
source = "asdfbne"
target = "asejrb"
assert brew(source, target) != brew(target, source)
def test_brew_longer_source():
source = "Hospital"
target = "Hosp"
brew(source, target)
def test_brew():
source = "Hosp"
target = "Hospital"
gold = 0.4
assert math.isclose(brew(source, target), gold, rel_tol=1e-7)
